15394787216 has 40 divisors (see below), whose sum is σ = 30026899584. Its totient is φ = 7646038400.

The previous prime is 15394787143. The next prime is 15394787227. The reversal of 15394787216 is 61278749351.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2149241 + ... + 2156391.

Almost surely, 2^15394787216 is an apocalyptic number.

15394787216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15394787216 is a deficient number, since it is larger than the sum of its proper divisors (14632112368).

15394787216 is a wasteful number, since it uses less digits than its factorization.

15394787216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8039 (or 8033 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 53.

The spelling of 15394787216 in words is "fifteen billion, three hundred ninety-four million, seven hundred eighty-seven thousand, two hundred sixteen".